SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 v2): Invalid SQL: INSERT INTO bb2_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('39fa7eca7e08b3a52c16c07d8c6304a0','0','18.188.80.123','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716173110','memberslist.php?sid=03f6a82bd088f217e412a8398d35cdf3','0','0','')
mysql error: Duplicate entry '39fa7eca7e08b3a52c16c07d8c6304a0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.35-38
php version: 5.3.29
Date: 20.05.2024 @ 05:45
Script: /memberslist.php?sid=03f6a82bd088f217e412a8398d35cdf3
Referer: